JUnit test failure

[J.Pietschmann]

Hi all,
I get a nice Junit failure:
Testcase: testFO2PDFWithDOM took 0.23 sec
        Caused an ERROR
loader constraints violated when linking org/w3c/dom/Node class
java.lang.LinkageError: loader constraints violated when linking
 org/w3c/dom/Node class
 at org.apache.xalan.transformer.TransformerIdentityImpl.
  createResultContentHandler(TransformerIdentityImpl.java:186)
 at org.apache.xalan.transformer.TransformerIdentityImpl.
  transform(TransformerIdentityImpl.java:296)
 at org.apache.fop.BasicDriverTestCase.
  loadDocument(BasicDriverTestCase.java:133)
 at org.apache.fop.BasicDriverTestCase.
  testFO2PDFWithDOM(BasicDriverTestCase.java:149)
This seems to have something to do mixing Jars form the JDK and
fop/lib. Does anybody have an idea how this can be avoided?
J.Pietschmann